Wyo. Stat. § 11-14-116: Sales between importers, manufacturers or manipulators excepted from provisions.

Nothing in this act shall restrict or avoid sales or exchanges of commercial fertilizers, soil conditioners or soil amendments to each other by importers, manufacturers or manipulators who mix fertilizer materials for sale, or prevent the free and unrestricted shipment of commercial fertilizers, soil conditioners or soil amendments to manufacturers or manipulators who have registered their brands as required by this act.